The HYM a 64 MByte DRAM module organized 388 608 words a 168-pin, dual read-out, single-in-line package comprising nine × 8 DRAMs in 400 mil wide SOJ or TSOPII - packages mounted together with ceramic decoupling capacitors a PC board. All inputs except RAS and DQ are buffered by using BiCMOS buffers/ line drivers. Each HYB3165805AJ/AT is described in the data sheet and is fully electrically tested and processed according to Siemens standard quality procedure prior to module assembly. After assembly onto the board, a further set of electrical tests is performed. The density and speed of the module can be detected by the use of presence detect pins.